What Happens on a Second DWI in Houston?
Under Texas Penal Code §49.09(a), a DWI with one prior conviction is a Class A misdemeanor — one step below a felony. The penalty range doubles across the board: a minimum of 30 days and up to one year in county jail, fines up to $4,000, a license suspension of 180 days to two years, and a state “superfine” of up to $4,500 on conviction. And Texas has no lookback period — a DWI from 15 or 20 years ago still counts as a prior. A second DWI lawyer Houston can identify exactly which of these consequences still might be avoided.
Just as important is what disappears: deferred adjudication is not available for a second DWI, and Harris County’s pretrial diversion programs are for first offenders only. The escape hatches you may remember from your first case are gone. That leaves two paths — fight the case, or plead into a conviction that stays on your record forever. This is precisely where a second DWI lawyer Houston earns their fee — finding the third path between conviction and blind hope.
A second DWI carries a 30-day minimum jail sentence. Even with probation, the judge must order at least 72 hours in county jail as a condition — and at least 5 days if your prior was within the last five years.
On a second DWI charge, Texas law requires an ignition interlock device as a condition of bond — before you are ever convicted of anything. Expect roughly $70–$100 per month plus installation while the case is pending.
Suspension runs 180 days to 2 years. If your prior was within five years, you face a waiting period before you can even apply for an occupational license — an interlock-restricted license is often the only way to keep driving legally.
Repeat DWI defendants are a priority for Harris County prosecutors. Reductions that are routine on a first offense must now be earned by attacking the State’s evidence — the stop, the tests, and even the validity of your prior conviction. A second DWI lawyer Houston who has stood on the other side of the table anticipates this shift and prepares accordingly.
Second DWI Penalties at a Glance
Here is how a second DWI compares to a first-time DWI and to a felony third DWI in Houston. A second DWI lawyer Houston walks clients through exactly where they land on this table before any decisions are made:
| Penalty | 1st DWI (Class B) | 2nd DWI (Class A) | 3rd DWI (Felony) |
|---|---|---|---|
| Jail / Prison | 72 hrs – 180 days | 30 days – 1 year | 2 – 10 years |
| Fine | Up to $2,000 | Up to $4,000 | Up to $10,000 |
| State superfine | $3,000 | $4,500 | $4,500–$6,000 |
| License suspension | 90 days – 1 year | 180 days – 2 years | 180 days – 2 years |
| Ignition interlock | If BAC 0.15+ | Mandatory (bond + license) | Mandatory |
| Deferred adjudication | Available | Not available | Not available |
If your breath or blood result was 0.15 or higher, additional consequences stack on top — see our guide to high-BAC DWI charges. The full financial picture, including insurance, is broken down on our cost of a DWI page. A second DWI lawyer Houston can estimate the full financial exposure of a specific case during a free consultation.
If a passenger under 15 was in the vehicle during this arrest, the case is not simply a second DWI — DWI with a child passenger under Penal Code §49.045 is an automatic state jail felony regardless of whether it is a first or second offense, carrying its own penalty range separate from the enhancement table above. And because Texas has no statutory limit on how many prior DWIs can be counted, a second DWI conviction also raises the stakes for any future arrest — two prior convictions make a third DWI an automatic third-degree felony under §49.09(b). If you hold a commercial driver's license, a second DWI conviction — even in a personal vehicle, not a commercial one — triggers a lifetime CDL disqualification under 49 CFR §383.51, with only a narrow path back after 10 years through a state-approved rehabilitation program. A second DWI lawyer Houston weighs all of these compounding risks, not just the immediate charge, before recommending whether to fight the case or negotiate.
How Herman Martinez Fights Second DWI Charges
A second DWI has one structural weakness most defendants never hear about: the State must prove the prior conviction, not just the new arrest. As a former Chief Prosecutor and second DWI lawyer Houston clients call first, Herman Martinez knows how enhancement paperwork gets sloppy — and how to exploit it.
1. Attack the prior conviction. If your first conviction has constitutional defects — you weren’t represented by counsel, the plea wasn’t knowing and voluntary, or an out-of-state offense doesn’t match the elements of Texas DWI — it may not qualify as an enhancement. Knock out the prior and your Class A misdemeanor becomes a Class B with first-offense options back on the table. A second DWI lawyer Houston reviews every page of an old case file looking for exactly this kind of defect.
2. Attack the stop. Every DWI case begins with the traffic stop. If the officer lacked reasonable suspicion, everything that followed — field sobriety tests, breath tests, statements — can be suppressed. Read how we challenge unlawful traffic stops.
3. Attack the tests. Intoxilyzer maintenance failures, blood-draw chain-of-custody gaps, and field sobriety tests administered contrary to NHTSA standards are all fertile ground — especially when the State’s case depends on a single number. Our breath and blood test defense page covers each angle.
4. Protect your license in parallel. You have only 15 days from arrest to request the ALR hearing that decides your license — and that hearing doubles as an early chance to cross-examine the arresting officer under oath before the criminal case is decided. A second DWI lawyer Houston handles this ALR fight in parallel with the criminal case from day one.
What Does a Second DWI Cost Beyond the Courtroom?
The fines and superfine on the penalty table are only part of the bill. SR-22 high-risk insurance becomes mandatory to reinstate a license after a second DWI, and premiums typically run two to three times higher for three to five years — on top of the interlock device fees already required just to keep driving during the case. Add a DPS license reinstatement fee, lost wages from the interlock installation appointment and court dates, and the practical cost of a second conviction routinely runs into five figures before a single day of the jail sentence is served. A second DWI lawyer Houston factors every one of these downstream costs into case strategy, not just the criminal penalty range, because a plea that looks manageable in the courtroom can be the more expensive choice over five years once insurance and licensing costs are counted. See the full breakdown on our DWI cost page.
Second DWI Questions
Yes, in a meaningful sense. The sentencing range starts at 30 days, and even when a judge grants probation, Texas law requires at least 72 hours of actual county jail time as a condition — at least 5 days if your prior conviction was within five years of the new arrest. An experienced attorney fights to keep confinement at the statutory minimum or to defeat the charge entirely. A second DWI lawyer Houston negotiates aggressively to hold jail time at the statutory floor.
Forever. Texas eliminated its 10-year lookback window — there is no time limit on DWI enhancement. A conviction from decades ago still makes a new arrest a second DWI. The five-year mark matters only for certain consequences, like the longer minimum jail condition on probation and occupational license waiting periods.
Often yes — but it is not automatic, and it comes with teeth: 72 hours to 5 days of real jail time, an ignition interlock, DWI intervention classes, monthly fees, and up to two years of supervision. Whether probation is the right goal (versus fighting for a dismissal or reduction) depends entirely on the strength of the State’s evidence.
Yes. Texas requires an interlock as a bond condition on any DWI with a prior conviction — it goes in while your case is still pending. If convicted with a prior within five years, an interlock is also required to reinstate your license. Costs run roughly $70–$100 monthly plus installation.
A second DWI lawyer Houston has more tools available than most clients realize. Second DWIs are dismissed or reduced the same way any DWI is beaten: suppressing an unlawful stop, discrediting field sobriety tests, exposing breath or blood test failures — plus one extra path unique to enhanced charges: invalidating the prior conviction so the case can no longer be charged as a second offense.
A second DWI conviction brings a 180-day to 2-year suspension, and the ALR process can suspend you even without a conviction. Most clients keep driving through an occupational or interlock-restricted license, but if your prior was within five years there are waiting periods — timing and strategy matter. We handle the license fight alongside the criminal case.
No. Texas allows deferred adjudication only for first-time DWI (and even then with restrictions). On a second DWI there is no deferral, no DIVERT, and no pretrial diversion in Harris County — which is exactly why the decision to fight the case is so much more consequential the second time around.
Texas can use out-of-state convictions for enhancement — but only if that state’s law substantially matches the elements of Texas DWI. Herman reviews the statute behind every out-of-state prior; when the elements don’t line up, the enhancement fails and the charge drops back to a first offense.